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Diffstat (limited to '')
| -rw-r--r-- | tc/q_cbs.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/tc/q_cbs.c b/tc/q_cbs.c new file mode 100644 index 0000000..13bb08e --- /dev/null +++ b/tc/q_cbs.c @@ -0,0 +1,141 @@ +/* + * q_cbs.c CBS. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Authors: Vinicius Costa Gomes <vinicius.gomes@intel.com> + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <string.h> + +#include "utils.h" +#include "tc_util.h" + +static void explain(void) +{ + fprintf(stderr, + "Usage: ... cbs hicredit BYTES locredit BYTES sendslope BPS idleslope BPS\n" + " [offload 0|1]\n"); +} + +static void explain1(const char *arg, const char *val) +{ + fprintf(stderr, "cbs: illegal value for \"%s\": \"%s\"\n", arg, val); +} + +static int cbs_parse_opt(struct qdisc_util *qu, int argc, + char **argv, struct nlmsghdr *n, const char *dev) +{ + struct tc_cbs_qopt opt = {}; + struct rtattr *tail; + + while (argc > 0) { + if (matches(*argv, "offload") == 0) { + NEXT_ARG(); + if (opt.offload) { + fprintf(stderr, "cbs: duplicate \"offload\" specification\n"); + return -1; + } + if (get_u8(&opt.offload, *argv, 0)) { + explain1("offload", *argv); + return -1; + } + } else if (matches(*argv, "hicredit") == 0) { + NEXT_ARG(); + if (opt.hicredit) { + fprintf(stderr, "cbs: duplicate \"hicredit\" specification\n"); + return -1; + } + if (get_s32(&opt.hicredit, *argv, 0)) { + explain1("hicredit", *argv); + return -1; + } + } else if (matches(*argv, "locredit") == 0) { + NEXT_ARG(); + if (opt.locredit) { + fprintf(stderr, "cbs: duplicate \"locredit\" specification\n"); + return -1; + } + if (get_s32(&opt.locredit, *argv, 0)) { + explain1("locredit", *argv); + return -1; + } + } else if (matches(*argv, "sendslope") == 0) { + NEXT_ARG(); + if (opt.sendslope) { + fprintf(stderr, "cbs: duplicate \"sendslope\" specification\n"); + return -1; + } + if (get_s32(&opt.sendslope, *argv, 0)) { + explain1("sendslope", *argv); + return -1; + } + } else if (matches(*argv, "idleslope") == 0) { + NEXT_ARG(); + if (opt.idleslope) { + fprintf(stderr, "cbs: duplicate \"idleslope\" specification\n"); + return -1; + } + if (get_s32(&opt.idleslope, *argv, 0)) { + explain1("idleslope", *argv); + return -1; + } + } else if (strcmp(*argv, "help") == 0) { + explain(); + return -1; + } else { + fprintf(stderr, "cbs: unknown parameter \"%s\"\n", *argv); + explain(); + return -1; + } + argc--; argv++; + } + + tail = addattr_nest(n, 1024, TCA_OPTIONS); + addattr_l(n, 2024, TCA_CBS_PARMS, &opt, sizeof(opt)); + addattr_nest_end(n, tail); + return 0; +} + +static int cbs_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) +{ + struct rtattr *tb[TCA_CBS_MAX+1]; + struct tc_cbs_qopt *qopt; + + if (opt == NULL) + return 0; + + parse_rtattr_nested(tb, TCA_CBS_MAX, opt); + + if (tb[TCA_CBS_PARMS] == NULL) + return -1; + + qopt = RTA_DATA(tb[TCA_CBS_PARMS]); + if (RTA_PAYLOAD(tb[TCA_CBS_PARMS]) < sizeof(*qopt)) + return -1; + + print_int(PRINT_ANY, "hicredit", "hicredit %d ", qopt->hicredit); + print_int(PRINT_ANY, "locredit", "locredit %d ", qopt->locredit); + print_int(PRINT_ANY, "sendslope", "sendslope %d ", qopt->sendslope); + print_int(PRINT_ANY, "idleslope", "idleslope %d ", qopt->idleslope); + print_int(PRINT_ANY, "offload", "offload %d ", qopt->offload); + + return 0; +} + +struct qdisc_util cbs_qdisc_util = { + .id = "cbs", + .parse_qopt = cbs_parse_opt, + .print_qopt = cbs_print_opt, +}; |